The MIL-STD-1553B bus has the characteristics of high speed and flexibility, high communication efficiency, and easy modification, expansion, and maintenance. Here are some data: MIL-STD-1553B is a digital command/response time division multiplexing data bus with a transmission rate of 1M bits/second, which is sufficient to meet the requirements of third-generation combat aircraft; The length of the number is 20 bits, and the effective length of the data is 16 bits; Half duplex transmission method, dual redundant fault tolerance method, transmission medium is shielded twisted pair. The redundancy design of 1553B bus improves the reliability of subsystems and the entire system.The average time between failures of the bus itself (including bus controllers, twisted pair cables, couplers, etc.) exceeds 10000 hours, and its failure rate can be basically ignored in the entire system, which is much better than the original connection method of the J-8 II. At the same time, it can eliminate the complex and tedious point-to-point connection between J-8 II devices, which can reduce the weight of the full electronic system by about 5% and save space and power consumption.
Compared with traditional modular electrical methods, digital transmission methods have faster speed, shorter response time, better confidentiality, stronger anti-interference ability, and can fully leverage the performance of fire control equipment. The numerical error rate is less than one in ten million. In terms of logistics maintenance, standard interfaces and cards are very easy to disassemble and can be easily tested/virtualized through digital tools. After testing, only ground testing can reduce maintenance hours by 30% compared to the past.

The 1553B protocol was originally designed for the Air Force. With the continuous manifestation of the superiority of the 1553B bus and the upgrading of weapons and equipment, the 1553B protocol has been applied to various branches of the military, and has been adopted in the weapons and maintenance systems of the army and navy.